16061865 has 16 divisors (see below), whose sum is σ = 26136000. Its totient is φ = 8420672.

The previous prime is 16061863. The next prime is 16061869. The reversal of 16061865 is 56816061.

It is a cyclic number.

It is not a de Polignac number, because 16061865 - 2¹ = 16061863 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16061861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8190 + ... + 9959.

It is an arithmetic number, because the mean of its divisors is an integer number (1633500).

Almost surely, 2^16061865 is an apocalyptic number.

16061865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16061865 is a deficient number, since it is larger than the sum of its proper divisors (10074135).

16061865 is a wasteful number, since it uses less digits than its factorization.

16061865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18216.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 16061865 is about 4007.7256642640. The cubic root of 16061865 is about 252.3085631925.

The spelling of 16061865 in words is "sixteen million, sixty-one thousand, eight hundred sixty-five".